text: * Coupled substitutions are common in the silicate minerals where  substitutes for  in tetrahedral sites.
  For example, when a plagioclase feldspar solid solution series forms, albite (Na Al SiO) can change to anorthite (Ca AlSiO) by having  replace . However, this leaves a negative charge that has to be balanced by the (coupled) substitution of  for .
  * Despite being nicknamed fool's gold, pyrite is sometimes found in association with small quantities of gold. Gold and arsenic occur as a coupled substitution in the pyrite structure. In the Carlin–type gold deposits, arsenian pyrite contains up to 0.37% gold by weight.
  * The possible replacement of  by  in Corundum.
  *  and  in Haematite
  *  →   Diopside (MgCaSiO) → Jadeite: (NaAlSiO or   
  *   2 → 2   As in the Spinel groups
  * The site being filled to maintain charge does not have to be a substitution. It can also involve filling a site that is normally vacant in order to achieve charge balance. For example, in the amphibole mineral Tremolite - (Ca(MgFe)SiO(OH)),  replaces  then  can go into a site that is normally vacant to maintain charge balance. This new mineral would then be edenite  a variety of hornblende.
  * Bityite’s structure consists of a coupled substitution it exhibits between the sheets of polyhedra; the coupled substitution of beryllium for aluminium within the tetrahedral sites allows a single lithium substitution for a vacancy without any additional octahedral substitutions.  The transfer is completed by creating a tetrahedral sheet composition of SiBeAl.  The coupled substitution of lithium for vacancy and the beryllium for the tetrahedral aluminium maintains all the charges balanced; thereby, resulting in the trioctahedral end member for the margarite sub-group of the phyllosilicate group.
  *  Ferrogedrite is related to anthophyllite amphibole and gedrite through coupled substitution of (Al, Fe) for (Mg, Fe, Mn) and Al for Si.